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Dissertations / Theses on the topic 'Microporous membrane'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Barbe, Aron Mervyn. "The fouling of hydrophobic, microporous membranes used in osmotic distillation." Thesis, Queensland University of Technology, 2001.

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2

Borkar, Neha. "Characterization of microporous membrane filters using scattering techniques." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1289943937.

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3

Browning, Douglas R. "Design of a microcomputer-based microporous membrane process controller." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/51890.

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A microcomputer-based process controller has been developed to produce porous membrane material. The production process is based on stretching the material in a constant temperature solvent bath. This thesis describes the hardware and software designed to direct and monitor the process. A VIC 20 is used as the process-controlling microcomputer. The system features two dedicated motor controllers and two channels for controlling temperature. The motor controllers determine the material feed rate and rate of stretch. The temperature controllers keep the system at a selectable constant temperat
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4

Albert, Kelsey Morgan. "Microporous Membrane-based Co-culture of Human Embryonic Stem Cells." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd_retro/161.

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Transwell inserts with microporous membranes, available from multiple commercial sources, have been widely used for various mammalian cell culture applications, including the reduction of cell culture mixing. In this study, we examined the feasibility and functionality of using this technology for separating human embryonic stem cells (hESCs) from their respective feeder cells. We found that when hESCs were propagated on transwell inserts positioned directly above feeder cells grown in a separate dish, the hESCs could be maintained in an undifferentiated state for over 10 passages with no chan
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5

Jacob, Silvana do Couto. "Studies of a microporous membrane for analyte preconcentration and separation." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/6846.

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A dual phase gas diffusion-FIA system containing a tubular PTFE-membrane was studied as a mean of producing gas samples for routine 15N/14N isotopic ratio mass spectrometry. The method is based on Rittenberg's reaction; the ammonium sample is injected into a liquid alkaline stream containing hypobromite and the N2 gas produced in the reaction diffuses across a PTFE-membrane into a helium carrier stream which carries it to the detector. Initially here, the use of a tubular microporous PTFE-membrane as a device for the preconcentration of samples in aqueous solutions was investigated. The perfor
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6

Lee, Michael James. "Novel microporous polymers for use as gas separation membranes." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25786.

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Polymers of Intrinsic Microporosity (PIMs) combine the desirable processability of polymers with a significant degree of microporosity generated from the inefficient packing of their rigid and contorted structures. They are attracting attention for a variety of applications including as membrane materials for gas separations. Over the last 30 years, membranes have become an established technology for separating gases and are likely to play key role in reducing the environmental impact and costs of many industrial processes such as O2 or N2 enrichment from air, natural gas upgrading and hydroge
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7

Deyhim, Sina. "Deriving Gas Transport Properties of Microporous Silica Membranes from First Principles and Simulating Separation of Multi-Component Systems in Different Flow Configurations." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31340.

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Amorphous silica membranes have molecular sieving properties for the separation of hydrogen from gas mixtures at high temperature. Consequently, they are considered to be applied in separation of a shifted syngas coming out of a water-gas-shift-reactor into the syngas and hydrogen. This separation is a key to an Integrated Gasification Combined Cycle (IGCC) plant, which would allow reducing the carbon footprint in power generation industry. The main objective of this thesis was to carry out a preliminary assessment of suitability of currently available amorphous silica membranes for this separ
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8

Malpass-Evans, Richard. "Microporous polymers containing tertiary amine functionality for gas separation membrane fabrication." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/65421/.

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This research reported in this thesis is based on the synthesis of novel polymers of intrinsic microporosity (PIMs) with the aim of fabricating membranes for gas separation applications. PIMs are composed of rigid and awkwardly-shaped monomeric segments which lack the conformational and rotational freedom needed to pack space efficiently. As a result these polymers display high BET surface areas and display excellent gas permeabilities when solution-cast into films which can be used as gas separation membranes. This thesis describes the synthesis of a range of aromatic diamine, tetraamine, dia
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9

Vieira, Linhares Alexandre Manual. "Molecular simulation of adsorption and diffusion in a microporous carbon membrane." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/14604.

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In this thesis, we have particular interest in the hydrogen recovery from a hydrogen/hydrocarbon refinery waste mixture. Hydrogen is one of the clean, affordable and environmentally friendly energy sources. However, the current industry is not focused on the production or use of hydrogen as an energy carrier or a fuel for energy generation. Membrane separations are an economic alternative to either pressure swing adsorption separations or cryogenic separations. Transport across thin membranes can produce chemical and physical separations at a relatively low price. Thus, the diffusion of fluid
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10

Cooper, Charlie Austin. "CVD Modification and Vapor/Gas Separation Properties of Alumina Membranes." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1004998070.

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11

Wang, Junjing. "Emulsion-based encapsulation systems stabilized with insect proteins: Production with premix microporous emulsification." Doctoral thesis, Universitat Rovira i Virgili, 2021. http://hdl.handle.net/10803/673147.

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El principal objectiu fou produir sistemes d’encapsulació basats en emulsions emprant ingredients i tecnologies sostenibles. S’han combinat amb èxit la concentració per osmosi directa i la emulsificació per membranes en la valorització d’extracte de polifenol de garrofa. Especies d’insectes amb potencial per ser comercialitzades s’han valorat com a emulsificants. Fraccions proteiques de larva de mosca de soldat negre (BSFPC, Hermetia illucens) i d’escarabat búfal (LMPC, Alphitobius diaperinus) s’han utilitzat per estabilitzar emulsions simples i múltiples mitjançant emulsificació amb membranes
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12

Michos, Ioannis. "Studies on Ion Transport in Mesoporous and Microporous Inorganic Membranes as Ion Separators for Redox Flow Batteries." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin149155938977993.

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13

Xu, Juanbao. "Fabrication of Osmotic Distillation Membranes for Feeds Containing Surface-Active Agents." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16049/1/Juanbao_Xu_Thesis.pdf.

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The present work was undertaken to develop a composite osmotic distillation (OD) membrane consisting of a thin hydrogel coating on a microporous hydrophobic substrate for the concentration of aqueous feeds containing surface-active agents. The range of OD applications using the hydrophobic membrane alone have been severely limited by the propensity for membrane wet-out when contacted by amphiphilic agents such as oils, fats and detergents. Wet-out allows the feed solution to track freely through the membrane pores with a resulting loss of solutes and a decrease in selectivity. The rationale fo
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14

Xu, Juanbao. "Fabrication of Osmotic Distillation Membranes for Feeds Containing Surface-Active Agents." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16049/.

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The present work was undertaken to develop a composite osmotic distillation (OD) membrane consisting of a thin hydrogel coating on a microporous hydrophobic substrate for the concentration of aqueous feeds containing surface-active agents. The range of OD applications using the hydrophobic membrane alone have been severely limited by the propensity for membrane wet-out when contacted by amphiphilic agents such as oils, fats and detergents. Wet-out allows the feed solution to track freely through the membrane pores with a resulting loss of solutes and a decrease in selectivity. The rationale fo
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15

Bailey, Adelaide Fiona Grace. "The Concentration of Aqueous Solutions By Osmotic Distillation (OD)." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16006/1/Adelaide_Bailey_Thesis.pdf.

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This study was to investigate theory and application of Osmotic Distillation (OD). OD is a new novel membrane separation process used for the concentration of aqueous solutions such as fruit juices without the application of heat. The present work was undertaken to investigate flux limitations focusing on feedside, membrane and stripper side characteristics of OD. Once the limiting areas were identified, further studies were undertaken to determine methods of minimizing those limitations without losing the quality and integrity of the liquid feed. A laboratory scale OD system was used to si
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16

Bailey, Adelaide Fiona Grace. "The Concentration of Aqueous Solutions By Osmotic Distillation (OD)." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16006/.

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This study was to investigate theory and application of Osmotic Distillation (OD). OD is a new novel membrane separation process used for the concentration of aqueous solutions such as fruit juices without the application of heat. The present work was undertaken to investigate flux limitations focusing on feedside, membrane and stripper side characteristics of OD. Once the limiting areas were identified, further studies were undertaken to determine methods of minimizing those limitations without losing the quality and integrity of the liquid feed. A laboratory scale OD system was used to si
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17

Morgan, Jason. "Towards an Understanding of the Gas Diffusion Layer in Polymer Electrolyte Membrane Fuel Cells." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/555.

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The gas diffusion layer (GDL) is one of the key components in a polymer electrolyte membrane (PEM) fuel cell. It performs several functions including the transport of reactant gases and product water to and from the catalyst layer, conduction of both electrons and heat produced in the catalyst layer, as well as mechanical support for the membrane. The overarching goal of this work is to thoroughly examine the GDL structure and properties for use in PEM fuel cells, and more specifically, to determine how to characterize the GDL experimentally ex-situ, to understand its performance in-situ, and
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18

Simon, Christoph Rudolf Theodor [Verfasser], Hubert A. [Akademischer Betreuer] Gasteiger, Harald [Gutachter] Klein, and Hubert A. [Gutachter] Gasteiger. "Oxygen and Water Transport in the Microporous Layer of Polymer Electrolyte Membrane Fuel Cells / Christoph Rudolf Theodor Simon ; Gutachter: Harald Klein, Hubert A. Gasteiger ; Betreuer: Hubert A. Gasteiger." München : Universitätsbibliothek der TU München, 2020. http://d-nb.info/122127967X/34.

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19

Turel, Tacibaht Gowayed Yasser. "Gas transmission through microporous membranes." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/FALL/Polymer_and_Fiber_Engineering/Dissertation/Turel_Tacibaht_38.pdf.

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20

Hancocks, Robin Danyel. "Controlled emulsification using microporous membranes." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/3057/.

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Emulsions are a vital part of many products in everyday use, such as foods, cosmetics, and even construction materials. Membrane emulsification is a technique which has been used to produce emulsions in a manner contrary to the traditional methods where droplets are broken and re-broken to make smaller and smaller droplets, and instead each droplet is individually formed at a pore on the surface of the membrane. This research compared two of the most favoured membrane emulsification techniques; cross-flow and rotating membrane emulsification. Two systems were built for producing emulsions usin
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21

Lanigan, William Robert. "A study of photopolymerized microporous membranes." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/8583.

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22

Henningsson, Maria, and Johanna Westbom. "Vattentäta och ”andande” textilier." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-16432.

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Rapporten innefattar en jämförande studie mellan olika typer av membran och beläggningar.Främst sker en jämförelse mellan materialens förmåga att andas. Vattentäthet testas på nyamaterial och efter olika sorters nötning så som martindale, flexing och tvätt för att få en ökadförståelse för materialen. Verktyget som används i studien för att mätaånggenomsläppligheten är hudmodellen. Resultatet presenteras med ett Ret-värde vilket är enförkortning på Evaporative resistance of a textile. Metoden används för att på ett bra sättsimulera hur huden svettas.Projektet har utförts på Swerea IVF som är et
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23

Rong, Yuanyang. "Intrinsically microporous polymer materials for electrodes and membranes." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720657.

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Microporous materials have received much attention and offer new opportunities in electrochemistry because of their interesting properties. Compared with the corresponding nonporous materials, the highly porous structure may facilitate internal mass transport process, provide accessibility to binding sites and provide size selectivity. A new class of microporous materials, polymers of intrinsic microporosity (PIMs) emerged about ten years ago. They combine the microporosity generated from the rigid and contorted backbones and the processibility of linear molecular polymers, which make them par
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24

Chandavarkar, Arun Suresh. "Dynamics of fouling of microporous membranes by proteins." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/13642.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1990.<br>Includes bibliographical references (leaves 274-284).<br>by Arun Suresh Chandavarkar.<br>Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1990.
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25

Karim, Karim Sadiq Abdul-Hussain. "Synthesis of novel polymers of intrinsic microporosity for potential application as gas separation membranes." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/23655.

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The work reported in this thesis describes the successful preparation of three classes of polymer that were designed to possess intrinisic microporosity from a range of aromatic tetrahydroxy and diamine monomers. The tetrahydroxy family of monomers were used to prepare a number of polybenzodioxane polymers and co-polymers using the chemistry developed for the archetypal PIM-1. Two co-polymers formed films suitable for gas permeability measurements indicating that they transport gases at high selectivity but lower permeability as compared to PIM-1. The diamino-containing monomers were used to p
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26

Chu, Jiangtao. "Microdialysis Sampling of Macro Molecules : Fluid Characteristics, Extraction Efficiency and Enhanced Performance." Doctoral thesis, Uppsala universitet, Mikrosystemteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-261068.

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In this thesis, fluid characteristics and sampling efficiency of high molecular weight cut-off microdialysis are presented, with the aim of improving the understanding of microdialysis sampling mechanisms and its performance regarding extraction efficiency of biological fluid and biomarkers. Microdialysis is a well-established clinical sampling tool for monitoring small biomarkers such as lactate and glucose. In recent years, interest has raised in using high molecular weight cut-off microdialysis to sample macro molecules such as neuropeptides, cytokines and proteins. However, with the increa
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27

Oulebsir, Fouad. "Transport de fluides dans les matériaux microporeux." Thesis, Pau, 2017. http://www.theses.fr/2017PAUU3018/document.

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L'exploitation des ressources non conventionnelles de roches mères telles que les schistes gazeux contribue de plus en plus au mix énergétique mondial en raison de la raréfaction des ressources conventionnelles. L'exploitabilité de ces réservoirs repose principalement sur la qualité, la teneur et le type de matière organique qu'ils contiennent. En effet, il est admis que plus de la moitié des hydrocarbures présents dans les schistes sont adsorbés dans la matière organique solide, appelée kérogène, dont la structure est microporeuse et amorphe, et qui représente à la fois la source et le réserv
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28

Lin, Lin. "On the Generation and Detection of Ultrasonic Plate Waves in Microporous Polymeric Material." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/LinL2003.pdf.

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29

Lao, Hongbai. "Novel microporous organo-clay materials and organo-clay polymeric composite membranes." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6830.

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A series of quaternarized ammonium mono and di-cations, quaternarized amino acid ester mono and di-cations, and quaternarized polyammonium cations were synthesized by methylation reaction. The synthesized quaternarized ammonium derivatives were incorporated into the interlamellar space of the smectites, montmorillonite (SWy-1) and hectorite (SHCa-1). The adsorption of these quaternarized ammonium cations by the smectites were studied by colorimetric and Na-electrode methods. Also the CEC values were determined from the adsorption isotherms and were found to be close to the CECs of the smectite
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30

Kaade, Wael. "Low-energy high-throughput microporous emulsification for lemon oil encapsulation." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/669482.

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L’oli de llimona és ric en terpens insaturats i funcionalitzats amb oxigen, esdevenint-ne d’aquesta manera susceptible a l’oxidació per oxigen, llum i calor. Per tal de minimitzar la degradació i pèrdua d’aromes durant el processament, una pràctica comú és l’encapsulació d’aquests olis mitjançant emulsificació abans d’emprar-los en aliments i begudes. En aquesta tesi, s’han produït emulsions d’oli de llimona en aigua amb una distribució de mida de gota estreta a través d’un nou sistema de membranes dinàmiques de mida de porus ajustable (DMTS) d’alt rendiment i baix cost energètic. Les emulsi
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Jan, Der-E. 1961. "Electrokinetic and surface charge characteristics of microporous membranes used in aqueous filtration." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/278066.

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The electrical characteristics of nylon 66, charge-modified nylon 66 and PVDF filter membranes were investigated using the electrophoretic and streaming potential techniques. Characterization of surface charge density of nylon based membranes were performed by acid/base titration. The adsorption of an anionic dye was used to determine the charge density of positive sites on the N66 Posidyne membrane. The results show that the isoelectric point (IEP) of N66 Posidyne and Zetapor (E-grade) occurred at pH 7.6 and 6.2, respectively. The point of zero charge (PZC) of E-grade Zetapor occurred at a mu
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32

McCool, Benjamin A. "Synthesis and Characterization of Microporous Silica Membranes Fabricated through Pore Size Reduction of Mesoporous Silica Membranes Using Catalyzed Atomic Layer Deposition." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/McCoolBA2004.pdf.

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33

Palacio, Martínez Laura. "Caracterización estructural y superficial de membranas microporosas /." [s.l.] : [s.n.], 1998. http://uvadoc.uva.es/handle/10324/67.

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34

Darragh, Brendan. "Microporous membranes as gas/liquid phase contactors for the use in aggressive colloidal solutions." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437450.

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35

Rieck, Daniel C. "MEMS fabricated nanopores and micropores functionalized with chromate-selective solvent polymeric membrane." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/d_rieck_012609.pdf.

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Thesis (M.S. in chemical engineering)--Washington State University, December 2008.<br>Title from PDF title page (viewed on Apr. 10, 2009). "Department of Chemical Engineering." Includes bibliographical references.
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36

Bassetti, Fatima de Jesus. "Preparação, caracterização e aplicação de membranas polimericas microporosas assimetricas." [s.n.], 2002. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267431.

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Orientadores : Leila Peres, Jose Carlos Cunha Petrus<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-08-03T02:46:17Z (GMT). No. of bitstreams: 1 Bassetti_FatimadeJesus_D.pdf: 11629729 bytes, checksum: eb598e6620d1c60528abf54200242074 (MD5) Previous issue date: 2002<br>Resumo: Primeiramente foi feita a preparação de membranas poliméricas microporosas assimétricas, através da técnica de inversão de fases. O poli (fluoreto de vinilideno)-PVDF foi utilizado puro, ou associado ao cloreto de lítio e a um dos seguintes adi
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37

Tazi, Bouchra. "Élaboration et caractérisation d'une nouvelle membrane minérale conductrice ionique à structures dense et microporeuse." Montpellier 2, 1988. http://www.theses.fr/1988MON20138.

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Ce travail presente l'elaboration d'une nouvelle membrane conductrice ionique en nasicon (na::(3)zr::(2)si::(2)po::(61)). Les tests d'echanges ioniques montrent la possibilite d'echange entre des ions na**(+) et des cations ag**(+), k**(+), li**(+) et na**(+))
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Prasad, Ravi Mohan. "Polymer-Derived Microporous Ceramics for Membranes and Sensors for High Temperature Hydrogen Purification and Sensing." Phd thesis, tuprints, 2012. http://tuprints.ulb.tu-darmstadt.de/3181/1/PhD_Dissertation_Ravi_Mohan_Prasad_%28TU_Darmstadt%29.pdf.

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The growing interest in the use of hydrogen as main fuel has increased the need for pure hydrogen (H2) production and purification. There are several by-products (CO, H2O, CO2) associated with the production of hydrogen which might damage the production rate. Therefore, separation of hydrogen from other gases is an important step in the hydrogen production process. If H2 can be selectively removed from the product side during hydrogen production in membrane reactors, then it would be possible to achieve complete CO conversion in a single-step under high temperature conditions. The main goa
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Máximo, Giuliana. "Clarificação e estabilização biológica de chope através de membranas microporosas." Florianópolis, SC, 2002. http://repositorio.ufsc.br/xmlui/handle/123456789/83073.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Curso de Pós-Graduação em Engenharia de Alimentos<br>Made available in DSpace on 2012-10-19T20:45:31Z (GMT). No. of bitstreams: 0<br>Preparação e caracterização de membranas microporosas, estudo de sua utilização na clarificação e estabilização biológica do chope. As membranas foram preparadas a partir de soluções poliméricas de Polietersulfona (PES) puro ou associado à polivinilpirrolidona (PVP) e Polifluoreto de Vinilideno (PVDF) associado ao Cloreto de Lítio (LiCl). Foram clarificados chopes pré-filtrados,
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Tazi, Bouchra. "Elaboration et caractérisation d'une nouvelle membrane minérale conductrice ionique à structure dense et microporeuse." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376188163.

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Maggioni, Jair Francisco. ""Separação de fases de sistemas multicomponentes para preparação de membranas microporosas"." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249445.

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Orientador: Suzana Pereira Nunes<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-07-25T00:27:22Z (GMT). No. of bitstreams: 1 Maggioni_JairFrancisco_D.pdf: 4610671 bytes, checksum: 732ede69a2dff866ad7e6b38ae8109cc (MD5) Previous issue date: 1999<br>Doutorado
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42

Lito, Patrícia Ferreira. "Caracterização de novas membranas de titanossilicatos microporosos por ensaios de permeabilidade." Doctoral thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/3216.

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Doutoramento em Engenharia Química<br>O interesse crescente das membranas inorgânicas deve-se à potencial aplicação em novas áreas de investigação e da indústria, e em alternativa a operações mais convencionais. Em particular, as membranas de titanossilicatos oferecem vantagens importantes sobre as de zeólitos, pois podem ser sintetizadas sem agentes estruturantes orgânicos, para evitar a calcinação subsequente usualmente responsável por defeitos irreversíveis, exibem novas possibilidades de substituição isomórfica da matriz, permitindo um ajuste mais fino das propriedades catalíticas e de ads
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Barros, Sara Margarida Baía. "Caracterização de membranas microporosas de titanossilicatos por permeação de um gás puro." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/3042.

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Mestrado em Engenharia Química<br>Nos últimos anos, as membranas inorgânicas microporosas têm vindo a ganhar cada vez mais interesse na comunidade científica, devido às vantagens que apresentam em relação às poliméricas. Neste âmbito, o Laboratório Associado CICECO, sediado na Universidade de Aveiro, tem desenvolvido investigação intensiva na preparação de novas membranas microporosas de titanossilicatos, particularmente de ETS-10 e AM-3. Todavia, os processos de síntese baseiam-se em métodos de tentativa e erro, ou seja, depois de preparadas, as membranas são caracterizadas para se optimizare
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Oliveira, Eunice Helena Perpétuo de. "Preparação de membranas microporosas para tratamento de efluentes da indústria de alimentos." Florianópolis, SC, 2000. http://repositorio.ufsc.br/xmlui/handle/123456789/78416.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.<br>Made available in DSpace on 2012-10-17T14:05:11Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T16:57:04Z : No. of bitstreams: 1 170302.pdf: 8708472 bytes, checksum: fdb8562d09740499825e1c9382889a5c (MD5)<br>Estudo do processo de ultrafiltração como agente redutor da carga poluente das águas residuárias originadas de uma indústria frigorífica, nas etapas de escaldagem e resfriamento das carcaças. Para efeito comparativo, foi realizado também, um breve estudo da ultrafiltração do soro de queijo.
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45

Maksoud, Mahmoud. "Mise en forme de polymères de coordination microporeux dans les canaux de membranes d'alumine." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/3080/.

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La thématique du recherche développée au cours de cette thèse de doctorat concerne la mise en forme de Polymères de Coordination microPoreux (PCP, diamètres de pores &lt; 2 nm) dans les canaux de membranes ; (Anodisc 13, membranes d'alumine macroporeuses, diamètres de pores ˜ 250 nm, épaisseur 0,6 µm). Une méthode simple et efficace a été mise au point pour atteindre cet objectif. Elle implique la filtration des réactifs entrant dans la composition du PCP, suivant un mode étape par étape, au-travers de la membrane. Elle permet une distribution continue et relativement homogène des cristaux de
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MOURA, Pedro Emanuel Vieira. "Desenvolvimento de membranas microporosas com compósitos poliméricos de PVC, PEG e fibras vegetais." Universidade Federal de Alfenas, 2017. https://bdtd.unifal-mg.edu.br:8443/handle/tede/1023.

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As fibras naturais apresentam boas propriedades mecânicas e adsortivas, considerável biodegradabilidade, baixo custo, e provêm de recursos renováveis. Por outro lado, a incompatibilidade entre fibras naturais que possuem caráter hidrofílico e materiais poliméricos hidrofóbicos gera uma fraca interface fibra/polímero, podendo ocorrer laminação do material. Portanto, o preparo desses materiais compósitos permanece um desafio. Neste trabalho foram sintetizadas membranas semipermeáveis, com matriz de policloreto de vinila (PVC) e a matriz combinada de policloreto de vinila (PVC) e o polietileno gl
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Mignot, Laurent. "Immobilisation de micro-organismes dans des structures composites gel d'agar/membrane microporeuse. Proprietes des structures. Applications biotechnologiques." Paris 6, 1989. http://www.theses.fr/1989PA066628.

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Des cellules viables d'escherichia coli ont ete immobilisees par piegeage dans une couche plane d'agar bordee par une membrane microporeuse. L'activite metabolique globale d'une structure composite evolue au cours des periodes d'incubation avant d'atteindre un niveau stable dans le temps. Cette activite est controlee en permanence par deux phenomenes aux effets contradictoires: la croissance bacterienne et la resistance de la structure composite au transfert de masse interne des substrats. Notre protocole d'immobilisation a ete exploite dans un prototype semi-industriel de biophotoreacteur. Ce
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48

Zanatta, Vanessa. "Uso de membranas cerâmicas microporosas na produção de emulsões óleo de girassol em água." reponame:Repositório Institucional da UFSC, 2014. https://repositorio.ufsc.br/xmlui/handle/123456789/129421.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2014.<br>Made available in DSpace on 2015-02-05T21:04:26Z (GMT). No. of bitstreams: 1 328991.pdf: 2538577 bytes, checksum: 80edbe16388bec7bb1a0580122593307 (MD5) Previous issue date: 2014<br>Emulsificação com membrana é um método simples quando comparado aos métodos convencionais, que tem recebido atenção crescente ao longo dos últimos anos, com aplicações potenciais em muitas áreas. Este trabalho teve como objetivo avaliar o preparo e a e
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LUCAS, Carla de Souza. "Medida de tamanho de poro em membrana polimérica de microfiltração utilizando técnica ultrassônica e redes neurais artificiais." reponame:Repositório Institucional do IEN, 2009. http://hdl.handle.net/ien/557.

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Submitted by Almir Azevedo (barbio1313@gmail.com) on 2014-01-08T16:18:28Z No. of bitstreams: 1 dissertacao_mestrado_ien_2009_08.pdf: 2286938 bytes, checksum: 63793f4c54b047550efb82703458c9ef (MD5)<br>Made available in DSpace on 2014-01-08T16:18:28Z (GMT). No. of bitstreams: 1 dissertacao_mestrado_ien_2009_08.pdf: 2286938 bytes, checksum: 63793f4c54b047550efb82703458c9ef (MD5) Previous issue date: 2009<br>O presente trabalho propõe um estudo sobre a avaliação por ultrassom do tamanho de poro em membranas poliméricas de microfiltração, utilizadas na área nuclear para a filtração de rejei
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Silva, Herbert Lima Belo da. "Uso de membranas microporosas no tratamento de efluentes de um frigorífico de abate de aves." Florianópolis, SC, 2005. http://repositorio.ufsc.br/handle/123456789/101881.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Alimentos.<br>Made available in DSpace on 2013-07-15T23:27:25Z (GMT). No. of bitstreams: 1 223540.pdf: 871507 bytes, checksum: 1c57c7112d5ab7ed8bdb1698d0588309 (MD5)<br>A Avicultura nacional passou por grandes transformações na década de 70, que levaram ao aumento de produção e organização dos sistemas produtivos, principalmente na região Sul. No Estado de Santa Catarina, essas transformações impulsionaram a instalação de diversas indústrias frigoríficas de abate e pr
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